The construction of core–shell structures through surface coating, and then making use of the synergistic effects between the core and shell to design and synthesize heterogeneous catalysts is a hot topic in the heterogeneous catalysis field. Developing a general coating route with functional shell materials is further highly desirable. Here we found that a poly(cyclotriphosphazene-co-4,4′-sulfonyldiphenol) (PZS) layer can be generally coated on various substrates with different components and morphologies, including metal oxides, noble metal nanoparticles, carbon materials and metal–organic frameworks (MOFs). In addition, the coating thickness could be well controlled through simply adjusting the amount of monomers. Taking advantage of the heteroatoms in the PZS layer and the synergistic effect between the core and shell, new methods for fabrication of co-doped hollow carbon shell catalysts and transition metal phosphide nanoparticles were developed. As a proof-of-concept application, the N, P, S-doped hollow carbon shells prepared by calcination of a ZnCo-ZIFs@PZS core–shell structure could act as a good carbo-catalyst for selective oxidation of C–H bonds in water.

中文翻译：

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涂覆聚A一般途径（cyclotriphosphazene-共在各种基材上和所导出的N，P，S掺杂的中空碳壳用于催化-4,4'-磺酰基）

通过表面涂层构造核-壳结构，然后利用核与壳之间的协同效应来设计和合成多相催化剂是多相催化领域的热门话题。进一步期望用功能性壳材料开发通用的涂覆途径。在这里，我们发现，聚（cyclotriphosphazene-合作-4,4'-磺酰基双酚（PZS）层通常可以涂覆在具有不同成分和形态的各种基材上，包括金属氧化物，贵金属纳米粒子，碳材料和金属有机骨架（MOF）。另外，可以通过简单地调节单体的量来很好地控制涂层的厚度。利用PZS层中的杂原子和核与壳之间的协同效应，开发了共掺杂中空碳壳催化剂和过渡金属磷化物纳米粒子的制备新方法。作为概念验证的应用，通过煅烧ZnCo-ZIFs @ PZS核-壳结构制备的N，P，S掺杂的中空碳壳可以用作选择性氧化C-H键的良好碳催化剂。在水里。